This fine little guidebook to the best fishing in Yellowstone Park discusses aquatic and terrestrial insect emergences and activity periods, fly patterns to imitate these insects, and effective fishing techniques. Included are specific locations, access points and trailheads, distances, and terrain descriptions. The handy icons located at the beginning of each of the more than two hundred waters discussed provide helpful, at-a-glance information about fish type, ease of access, and wildlife to watch for. This book is required reading for any fly fisher planning a trip to Yellowstone Park - an area that holds more wild trout water for its size than anywhere else in the world. Includes both color and B&W photos and illustrations throughout.